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Feb 25, 2022
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System.IConvertible F# snippet #7763

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10 changes: 10 additions & 0 deletions snippets/fsharp/System/IConvertible/Overview/fs.fsproj
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<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net6.0</TargetFramework>
</PropertyGroup>

<ItemGroup>
<Compile Include="iconvertible.fs" />
</ItemGroup>
</Project>
77 changes: 77 additions & 0 deletions snippets/fsharp/System/IConvertible/Overview/iconvertible.fs
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// <snippet1>
open System

/// Class that implements IConvertible
type Complex(x, y) =
member _.GetDoubleValue() =
sqrt (x * x + y * y)

interface IConvertible with
member _.GetTypeCode() =
TypeCode.Object

member _.ToBoolean(provider: IFormatProvider) =
(x <> 0.) || (y <> 0.)

member this.ToByte(provider: IFormatProvider) =
Convert.ToByte(this.GetDoubleValue())

member this.ToChar(provider: IFormatProvider) =
Convert.ToChar(this.GetDoubleValue())

member this.ToDateTime(provider: IFormatProvider) =
Convert.ToDateTime(this.GetDoubleValue())

member this.ToDecimal(provider: IFormatProvider) =
Convert.ToDecimal(this.GetDoubleValue())

member this.ToDouble(provider: IFormatProvider) =
this.GetDoubleValue()

member this.ToInt16(provider: IFormatProvider) =
Convert.ToInt16(this.GetDoubleValue())

member this.ToInt32(provider: IFormatProvider) =
Convert.ToInt32(this.GetDoubleValue())

member this.ToInt64(provider: IFormatProvider) =
Convert.ToInt64(this.GetDoubleValue())

member this.ToSByte(provider: IFormatProvider) =
Convert.ToSByte(this.GetDoubleValue())

member this.ToSingle(provider: IFormatProvider) =
Convert.ToSingle(this.GetDoubleValue())

member _.ToString(provider: IFormatProvider) =
$"({x}, {y})"

member this.ToType(conversionType: Type, provider: IFormatProvider) =
Convert.ChangeType(this.GetDoubleValue(), conversionType)

member this.ToUInt16(provider: IFormatProvider) =
Convert.ToUInt16(this.GetDoubleValue())

member this.ToUInt32(provider: IFormatProvider) =
Convert.ToUInt32(this.GetDoubleValue())

member this.ToUInt64(provider: IFormatProvider) =
Convert.ToUInt64(this.GetDoubleValue())

let writeObjectInfo testObject =
let typeCode = Type.GetTypeCode(testObject.GetType())
match typeCode with
| TypeCode.Boolean ->
printfn $"Boolean: {testObject}"
| TypeCode.Double ->
printfn $"Boolean: {testObject}"
| _ ->
printfn $"{typeCode}: {testObject}"

let testComplex = Complex(4, 7)

writeObjectInfo testComplex
writeObjectInfo (Convert.ToBoolean testComplex)
writeObjectInfo (Convert.ToDecimal testComplex)
writeObjectInfo (Convert.ToString testComplex)
// </snippet1>
1 change: 1 addition & 0 deletions xml/System/IConvertible.xml
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Expand Up @@ -64,6 +64,7 @@

:::code language="cpp" source="~/snippets/cpp/VS_Snippets_CLR_System/system.IConvertible/CPP/iconvertible.cpp" id="Snippet1":::
:::code language="csharp" source="~/snippets/csharp/System/IConvertible/Overview/iconvertible.cs" interactive="try-dotnet" id="Snippet1":::
:::code language="fsharp" source="~/snippets/fsharp/System/IConvertible/Overview/iconvertible.fs" id="Snippet1":::
:::code language="vb" source="~/snippets/visualbasic/VS_Snippets_CLR_System/system.IConvertible/VB/iconvertible.vb" id="Snippet1":::

]]></format>
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